Compressor for ice-machines



(.No'Model.) J. SGHUEHLE.

UOMPRESSOR FOR IGE MACHINES;

No. 370,896. Patented Oct. 4, 1887..

UNITED STATES PATENT OFFICE.

JACOB SOHUEHLE, OF SAN ANTONIO, TEXAS.

COMPRESSOR FOR ICE-MACHINES.

SPECIFICATION forming part of Letters Patent No. 370,896, dated October 4,- 1887.

Application filed May 27, 1857. Serial No. 239,515. (No model.) I

To all whom it may concern:

Be it known that I, JACOB SOHUEHLE, acitizen of theUnited States, residing at San Antonio, in the county of Bexar and State of Texas, have invented certain new and useful Improvements in Compressors for Ice-Machines; andI do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a sectional elevation of my improved compressor; Fig. 2, a plan view, partly in section, of the valvechamber, taken on line was of Fig. 1; and Fig. 3, a longitudinal section of the piston.

The present invention has relation to compressors to be used in ice-machines; and the object thereof is to improve the construction him several details, whereby its operation is materially improved and its construction simplified, which objects I attain by the construction substantially as shown in the drawings, and hereinafter described and claimed.

In the accompanying drawings, Arepresents the compressing-cylinder, of any suitable size and construction,which is provided atits lower end with .suitable stuffing-boxes and glands for the pistonrod B. Tothe end of this rod is connected the piston 0, provided with suitable packingrings, a, and an opening or openings, b. p

Within the piston G is seated a valve, D, the stem of which extends down into the end of the piston-rod B, and has a transverse slot in its end, through which passes a key, 0, held therein by a wedge, d. A slot, 6, is formed in the piston-rod, so as to admit of the valvestem f playing up and down. The transverse opening through the piston-rod may be of any with pipe E, which communicates therewith and-with the freezing-coil ordinarily used in ice-machines. The upper end of the cylinder A is provided with an annular flange, k, having an annular groove, Z, upon its upper face to receive a shoulder, m, upon the under side of a valve-plate, F. This valve plate upon its upper side is also formed with a groove, n, to receive a shoulder, 0, upon the under side of a flange, p, of the valve-chamber G, said chamber having a pipe, H, which communicates therewith and with the ar'nmoniacondenser coil. The flanges k1) form clamps between which is held the valve-plate F, the grooves and shoulders above described forming guides by which the valve-plate iscentered.

The valve I is seated on the plate F when it is closed, said valve having an upwardly.- extending hollow stern, K, a similar stem, L, depending from the upper .end of the valvechamber G. These'hollow stems form a receptacle for a coil-spring, M, a similar but larger spring, N, extending around the exterior of the stem K L, the lower end of the spring resting on the shoulder r. I

The spring M is a light spring, and its purpose is to retain the valve I on its seat, while the spring N is of increased strength, so as to act as a cushion when the valve is raised off its seat by the compressed ammonia.

The valve-chamber G is provided upon its interior with. passages s, to allow the compressed ammonia to pass into the valve-chamber abovethe valve.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In an ammonia-compressor, the piston-rod B, having transverse opening 6, in combination with the valve D, sternf, having slot and shoulder 9, key 0, held therein by wedge d, and the spring h and washer 71, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence 

